Originally posted by Colossus-Big C
no after they were merged with the universe, the celestials captured them and held them in the black galaxy
Not Universe, the Black Galaxy.
I'm pretty certain that it was revealed that they were woven into the fabric of the Black Galaxy in order to acquire the proper ingredients needed in the birthing of the Celestial or something similar. The Celestials were actually containing their bodies in physical canisters until Thor broke them free and they reverted back to normal.